Born-Digital or AnalogAnalogTranscriptCoal. Colorado Coal miners in eastern Colorado are employing conservation techniques. RMN Ap 18, 1969 p.46 Story of coal industry today. RMN Ap 20, 1969 p.8 Huge silo at Somerset, Colorado to hold 80 carloads of coal. Post N 16, 1969 p.2M Colorado Geological Survey will survey for possible coal mine cave-ins. RMN F 1, 1970 p.48 0CollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng
